Method and device for adapting parameters of a driver assistance system

The method involves detecting the current line of vision of the driver by a vision detection unit (1). The duration is determined, during which the driver does not look at the road. The parameters of the driver assistance system are adapted, when the determined duration exceeds a predetermined critical time value. Independent claims are also included for the following: (1) a device for executing an adapting method; and (2) a groove holding system for a motor vehicle.